steering INFINITI QX56 2008 Factory Workshop Manual

AV-28
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
Speaker Test
Select “Speaker Test” to display the speaker diagnosis screen. Press
“Start” to generate a test tone in speakers. Touch “End” to stop the
test tones.
Navigation
STEERING ANGLE ADJUSTMENT
The steering angle output value detected with the gyroscope is
adjusted.
SPEED CALIBRATION
During normal driving, distance error caused by tire wear and tire
pressure change is automatically adjusted for by the automatic dis-
tance correction function. This function, on the other hand, is for
immediate adjustment, in cases such as driving with tire chain fitted
on tires.
Diagnosis itemDis-
play Vehicle status
Remarks
Vehicle speed ON Vehicle speed > 0 km/h
Changes in indication may be delayed by approxi-
mately 1.5 seconds. This is normal.
OFF Vehicle speed = 0 km/h
− Ignition switch in ACC position
Parking brake ON Parking brake is applied.
OFF Parking brake is released.
Lights ON Light switch ON
Block the light beam from the auto light optical sensor.
OFF Light switch OFF
Ignition ON Ignition switch ON
—
OFF Ignition switch in ACC position
Reverse ON Selector lever in R position
Changes in indication may be delayed by approxi-
mately 1.5 seconds. This is normal.
OFF Selector lever in any position other
than R
− Ignition switch in ACC position
ALNIA0221GB
ALNIA0223GB
ALNIA0224GB
Revision: March 2010 2008 QX56

AV
STEERING SWITCHAV-101
< COMPONENT DIAGNOSIS > [AUDIO SYSTEM]
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STEERING SWITCH
DescriptionINFOID:0000000001696137
When one of the steering wheel audio control switches is pushed, the resistance in the steering wheel audio
control switch circuit changes depending on which button is pushed.
Diagnosis ProcedureINFOID:0000000001696138
1.CHECK STEERING WHEEL AUDI O CONTROL SWITCH RESISTANCE
1. Turn ignition switch OFF.
2. Disconnect steering wheel audio control switch connector M102.
3. Check resistance between steering switch connector terminals.
Do the steering wheel audio control switches check OK?
YES >> GO TO 2
NO >> Replace steering wheel audio control switch. Refer to AV-174, "
Removal and Installation".
2.CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect AV control unit connector M42 and spiral cable con- nector M30.
3. Check continuity between AV control unit harness connector M42 (A) and spiral cable harness connector M30 (B).
4. Check continuity between AV control unit connector M42 (A) and ground.
Are the continuity results as specified?
YES >> GO TO 3
NO >> Repair harness.
Terminal Signal name Condition Resistance
(Ω )
(Approx.)
16 17 Seek (down)
Depress switch. 165
Volume (down) Depress VOL down switch. 652
Phone/End Depress switch. 0
20 17 Seek (up)
Depress switch. 165
Volume (up) Depress VOL up switch. 652
Phone/Send Depress switch. 0
WKIA4457E
AB
Continuity
Connector Terminal Connector Terminal
M42 6
M30 24
Ye s
15 31
16 32
A —Continuity
Connector Terminal
M42 6
Ground No
15
16
ALNIA0332GB

AV-102
< COMPONENT DIAGNOSIS >[AUDIO SYSTEM]
STEERING SWITCH
3.SPIRAL CABLE CHECK
1. Disconnect spiral cable connector M102.
2. Check continuity between spiral cable harness connector M30 (A) and M102 (B).
Does the spiral cable check OK?
YES >> Inspection End.
NO >> Replace spiral cable. Refer to SR-7, "
Removal and Installation".
AB
Continuity
Connector Terminal Connector Terminal
M30 24
M102 20
Ye s
31 17
32 16
AWLIA1602ZZ
Revision: March 2010 2008 QX56

AV-106
< ECU DIAGNOSIS >[AUDIO SYSTEM]
AV CONTROL UNIT
4
(L) 5
(B/W) Pre-amp. audio signal rear
LH
OutputIgnition
switch ON Audio output
6
(Y) 15 Steering switch signal A Input Ignition
switch
ON Pressing switch
0V
Pressing switch 0.75
Pressing VOL up switch 2V
Except for above 5V
7
(V) Ground ACC power supply
InputIgnition
switch ACC −
Battery voltage
9
(R/L) Ground Illumination signal
Input OFFLighting switch is OFF
0V
Lighting switch is ON Battery voltage
10 — Shield — —— —
11
(BR) 12
(B/R) Pre-amp. audio signal front
RH
OutputIgnition
switch ON Audio output
13
(W) 14
(B) Audio signal rear RH Output Ignition
switch
ON Audio output
15 Ground Steering switch signal
ground —Ignition
switch
ON —0
V
16
(G) 15 Steering switch signal B Input Ignition
switch ON Pressing switch
0V
Pressing switch 0.75V
Pressing VOL down switch 2V
Except for above 5V
19
(Y) Ground Battery power supply Input Ignition
switch OFF —
Battery voltage
20
(B) Ground Ground
—Ignition
switch
ON —0
V
Terminal
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal nameInput/
Output
SKIB3609E
SKIB3609E
SKIB3609E
Revision: March 2010 2008 QX56

AV
MULTI AV SYSTEMAV-151
< SYMPTOM DIAGNOSIS > [AUDIO SYSTEM]
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SYMPTOM DIAGNOSIS
MULTI AV SYSTEM
Symptom TableINFOID:0000000001696148
AUDIO SYSTEM
NAVIGATION SYSTEM
HANDS-FREE PHONE SYSTEM
REAR VIEW MONITOR
Symptom Possible causeReference page
Inoperative • AV control unit power and ground circuit
• AV control unit •
AV- 6 3
•AV- 2 2
Steering switch does not operate • Steering switch
• AV control unit •
AV- 3 5•AV- 2 2
All speakers do not sound • Speaker circuit shorted to ground
• AV control unit power and ground circuit
• BOSE speaker amp. ON signal
• BOSE speaker amp. power and ground circuit
• BOSE speaker amp.
• AV control unit •
AV- 111
•AV- 6 3
•AV- 1 0 0
•AV- 6 6
•AV- 1 4 4
•AV- 1 0 5
One or several speakers do not sound • Front door speaker
• Front tweeter
• Center speaker
• Rear tweeter
• Rear door speaker
• Back door speaker
• Subwoofer •
AV- 8 0
•AV- 8 3
•AV- 8 6
•AV- 9 1
•AV- 8 8
•AV- 9 4
•AV- 9 7
Symptom Possible causeReference page
Inoperative • AV control unit power and ground circuit
• AV control unit •
AV- 6 3
•AV- 2 2
Steering switch does not operate • Steering switch
• AV control unit •
AV- 1 0 1•AV- 2 2
Voice activated control does not operate • Microphone
• Steering switch
• AV control unit •
AV- 1 0 3•AV- 1 0 1
•AV- 2 2
Symptom Possible causeReference page
Inoperative • AV control unit power and ground circuit
• AV control unit •
AV- 6 3
•AV- 2 2
Steering switch does not operate • Steering switch
• AV control unit •
AV- 1 0 1•AV- 2 2
Voice activated control does not operate • Microphone
• Steering switch
• AV control unit •
AV- 1 0 3•AV- 1 0 1
•AV- 2 2
Revision: March 2010 2008 QX56

AV-160
< SYMPTOM DIAGNOSIS >[AUDIO SYSTEM]
NORMAL OPERATING CONDITION
- Because calculation of the current location cannot be
done when traveling with the ignition off, for example
when traveling by ferry or when being towed, the location before travel is displayed. If the precise location
can be detected with GPS, the location will be corrected.
Vehicle Mark Jumps
In the following cases, the vehicle mark may appear to ju mp as a result of automatic correction of the current
location.
• When map matching has been done
- If the current location and the vehicle mark are diff erent when map matching is done, the vehicle mark may
seem to jump. At this time, the location may be “corre cted” to the wrong road or to a location which is not on
a road.
• When GPS location correction has been done
- If the current location and the vehicle mark are different when the location is corrected using GPS measure-
ments, the vehicle mark may seem to jump. At this time, the location may be “corrected” to a location which
is not on a road.
Vehicle Mark is in a River or Sea
The navigation system moves the vehicle mark with no distinction between land and rivers or sea. If the vehi-
cle mark is somehow out of place, it may appear that the vehicle is driving in a river or the sea.
Vehicle Mark Automatically Rotates
The system wrongly memorizes the rotating status as st opping when the ignition switch is turned ON with the
turntable rotating. That causes the vehicle mark to rotate when the vehicle is stopped.
When Driving on Same Road, Sometimes Vehicle Mark is in Right Place and Sometimes it is in Wrong Place
The conditions of the GPS antenna (GPS data) and gyroscope (angular speed sensor) change gradually.
Depending on the road traveled and the operation of the steering wheel, \
the location detection results will be
different. Therefore, even on a road on which the lo cation has never been wrong, conditions may cause the
vehicle mark to deviate.
Revision: March 2010 2008 QX56

AV
PRECAUTIONSAV-161
< PRECAUTION > [AUDIO SYSTEM]
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000004834913
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the battery, and wait at least 3 minutes before performing any service.
Precaution Necessary for Steering Wheel Rotation After Battery Disconnect
INFOID:0000000004834914
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecti ng both battery cables with the ignition knob in the
″ LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS , an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
Revision: March 2010 2008 QX56

AV-162
< PRECAUTION >[AUDIO SYSTEM]
PRECAUTIONS
5. When the repair work is completed, return the ignition switch to the
″LOCK ″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of a ll control units using CONSULT-III.
Revision: March 2010 2008 QX56

AV-174
< ON-VEHICLE REPAIR >[AUDIO SYSTEM]
STEERING SWITCH
STEERING SWITCH
Removal and InstallationINFOID:0000000001601496
REMOVAL
1. Remove the steering wheel. Refer to ST-18, "Removal and Installation".
2. Remove the steering wheel rear cover.
3. Pull the steering wheel audio control out of the steering wheel, disconnect the steering wheel audio con-
trol switch connector.
4. Remove the steering wheel audio control switch finisher screws and remove the steering wheel audio control switch finisher.
INSTALLATION
Installation is in the reverse order of removal.
1. Steering wheel audio control switch
finisher 2. Steering wheel audio control switch 3. Steering wheel
4. Steering wheel audio control switch connector
ALNIA0270ZZ
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BCS-2
COMB SW .................................................................24
COMB SW : CONSULT-III Function (BCM -
COMB SW) .............................................................
24
IMMU ...................................................................... ...25
IMMU : CONSULT-III Function (BCM - IMMU) .......25
BATTERY SAVER ................................................. ...25
BATTERY SAVER : CONSULT-III Function (BCM
- BATTERY SAVER) ........................................... ...
25
TRUNK ................................................................... ...26
TRUNK : CONSULT-III Function (BCM - TRUNK) ...26
RETAINED PWR .................................................... ...26
RETAINED PWR : CONSULT-III Function (BCM -
RETAINED PWR) ...................................................
26
SIGNAL BUFFER ................................................... ...26
SIGNAL BUFFER : CONSULT-III Function (BCM
- SIGNAL BUFFER) ................................................
26
AIR PRESSURE MONITOR ................................... ...27
AIR PRESSURE MONITOR : Diagnosis Descrip-
tion ..........................................................................
27
AIR PRESSURE MONITOR : CONSULT-III Func-
tion ....................................................................... ...
28
THEFT ALM ........................................................... ...29
THEFT ALM : CONSULT-III Function (BCM -
THEFT ALM) ..........................................................
29
COMPONENT DIAGNOSIS ........................30
U1000 CAN COMM CIRCUIT ......................... ...30
Description ........................................................... ...30
DTC Logic ...............................................................30
Diagnosis Procedure ..............................................30
U1010 CONTROL UNIT (CAN) .........................31
DTC Logic ............................................................ ...31
Diagnosis Procedure ..............................................31
Special Repair Requirement ...................................31
POWER SUPPLY AND GROUND CIRCUIT .. ...32
Diagnosis Procedure ............................................ ...32
COMBINATION SWITCH INPUT CIRCUIT .......33
Diagnosis Procedure ...............................................33
Special Repair Requirement ...................................34
COMBINATION SWITCH OUTPUT CIRCUIT ...35
Diagnosis Procedure ...............................................35
Special Repair Requirement ...................................35
COMBINATION SWITCH ..................................36
Description ........................................................... ...36
Diagnosis Procedure ...............................................36
ECU DIAGNOSIS .......................................38
BCM (BODY CONTROL MODULE) ............... ...38
Reference Value .................................................. ...38
Terminal Layout ......................................................40
Physical Values .......................................................40
Wiring Diagram .......................................................46
Fail Safe .................................................................49
DTC Inspection Priority Chart ...............................50
DTC Index ..............................................................50
SYMPTOM DIAGNOSIS ............................52
COMBINATION SWITCH SYSTEM SYMP-
TOMS .............................................................. ...
52
Symptom Table .................................................... ...52
PRECAUTION ............................................53
PRECAUTIONS .............................................. ...53
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .............................................................. ...
53
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ..................................
53
ON-VEHICLE REPAIR ...............................55
BCM (BODY CONTROL MODULE) ............... ...55
Removal and Installation .........................................55
Revision: March 2010 2008 QX56